Foreign Secretary William Hague's tweet on the crisis in Egypt has been criticised. Credit: David Cheskin/PA Wire

"He says he is concerned and so am I, but I wonder if that is the way to express the gravitas of the UK in these circumstances".

Foreign Office Minister Baroness Warsi defended the Government's response, stressing the David Cameron was one of the first leaders to visit Egypt after the "revolution" and Mr Hague had also visited.

Baroness Warsi said: "We are incredibly engaged, as is our ambassador, in this process. But it is important we are not seen to be involved deeply in telling the Egyptian people how they need to resolve this matter".